To enable IS-IS on a routing instance

Steps
 

In the navigation tree Routing view, expand Network→NE→Routing Instance


Right-click on a routing instance icon and choose Properties. The Routing Instance (Edit) form opens.


Click on the Protocols tab and select the IS-IS Enabled parameter.


Click OK.


Click Yes. IS-IS is displayed in the list of enabled protocols.


Save your changes and close the form. The ISIS Instance object is displayed in the navigation tree.

End of steps